Build failed. https://zuul.opendev.org/t/openstack/buildset/714024ba7e8f45209c22e0db570ba4c9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2fbac923fab649bfaf7e7924a0a69f86 : FAILURE in 5m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/88e55d327f454deebbefdc4f24eca18d : SUCCESS in 5m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ede9a43eda204fd5b7a5c8f381df0561 : SUCCESS in 5m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9860d09eaea5472aab9dc7500cf685e6 : SUCCESS in 6m 08s